9.5.1 CSN

1.
Function
Returns 'N' when the value to check is positive, and 'S' when negative. (A single-character) character-type function.
2.
Call
CNS(INS)
3.
Explanation of Parameters
INS (I) The value to be checked.
CNS (C *1) A character-type function of length 1 that returns 'N' when INS is positive, and 'S' when negative.
4.
Notes
(a)
Returns a null character when INS is 0.